public Game1()
{
graphics = new GraphicsDeviceManager(this);
Content.RootDirectory = "Content";
//Turn on and off rendering bounding boxes
m_PhysicsDebug = false;
m_debugMode = false;
//Starting amount of money
m_Money = 5;
//The amount of prizes won
m_prizesObtained = 0;
//Current state of the UFO
m_ufoState = e_UFOStates.e_freeRoam;
//Checker to make sure only 1 coin/money is inserted at a time.
m_coinInsertedOnceChecker = true;
//Initalize lists
m_GameObjects = new List<GameObject>();
m_prizesList = new List<Prize>();
//Turn on and off sounds
m_playSounds = true;
}
//Collision function for the UFO
public bool UFOCollisionDetection(CollisionSkin owner, CollisionSkin collidee)
{
//If the UFO collides with the bottom of the box
if (collidee.Equals(m_UFOCatcherBox.m_skin) && m_ufoState == e_UFOStates.e_grabbing)
{
m_ufoState = e_UFOStates.e_moveBackUp;
return true;
}
//If the UFO collides with a prize
foreach( Prize ob in m_prizesList)
{
if( collidee.Equals(ob.m_skin))
{
//Move the ufo back and
m_ufoState = e_UFOStates.e_moveBackUp;
ob.m_UFOBody = m_UFO.m_body;
ob.moveToTarget = true;
return true;
}
}
// all other collisions will be handled by physicengine
return true;
}
public void UFOLogic()
{
KeyboardState keyboardState = Keyboard.GetState();
GamePadState gamePadState = GamePad.GetState(PlayerIndex.One);
//Grabbing dropping states for logic
if (m_ufoState == e_UFOStates.e_freeRoam)
{
//If there is atleast 1 coin inserted allow the player to move the UFO
if (m_coinsInserted > 0)
{
if (keyboardState.IsKeyDown(Keys.Left) || gamePadState.DPad.Left == ButtonState.Pressed)
{
m_UFOController.force0 = new Vector3(-GameVariables.ufoMoveSpeed, 0, 0);
}
else if (keyboardState.IsKeyDown(Keys.Right) || gamePadState.DPad.Right == ButtonState.Pressed)
{
m_UFOController.force0 = new Vector3(GameVariables.ufoMoveSpeed, 0, 0);
}
else if (keyboardState.IsKeyDown(Keys.Up) || gamePadState.DPad.Up == ButtonState.Pressed)
{
m_UFOController.force0 = new Vector3(0, 0, -GameVariables.ufoMoveSpeed);
}
else if (keyboardState.IsKeyDown(Keys.Down) || gamePadState.DPad.Down == ButtonState.Pressed)
{
m_UFOController.force0 = new Vector3(0, 0, GameVariables.ufoMoveSpeed);
}
//Set the UFO to grab
if (keyboardState.IsKeyDown(Keys.Space) || gamePadState.Buttons.A == ButtonState.Pressed)
{
//Clear forces and set all forces to 0 so the UFO doesn't move based on previous moving forces.
m_UFO.m_body.ClearForces();
m_UFO.m_body.Velocity = new Vector3(0, 0, 0);
m_UFOController.force0 = Vector3.Zero;
//Remove a try/coin
m_coinsInserted--;
//Play grabbing Sound effect
if (m_playSounds)
m_UFObeamingSE.Play();
//Change state to grabbing
m_ufoState = e_UFOStates.e_grabbing;
}
}
}
else if (m_ufoState == e_UFOStates.e_grabbing)
{
m_mainCamera = m_FirstPersonCamera;
//Move UFO down
m_UFOController.force0 = new Vector3(0, -GameVariables.grabSpeed, 0);
}
else if (m_ufoState == e_UFOStates.e_moveBackUp)
{
//If the body of the UFO is not at/around the original position
if (m_UFO.m_body.Position.Y < m_UFO.m_GOPos.Y)
{
//Move it back up
m_UFOController.force0 = new Vector3(0, GameVariables.grabSpeed, 0);
}
//If it has
else if (m_UFO.m_body.Position.Y >= m_UFO.m_GOPos.Y)
{
//Clear all forces again so it doesn't move higher
m_UFO.m_body.ClearForces();
m_UFO.m_body.Velocity = new Vector3(0, 0, 0);
m_UFOController.force0 = Vector3.Zero;
//Change state to move across
m_ufoState = e_UFOStates.e_moveBackAcross;
}
}
else if (m_ufoState == e_UFOStates.e_moveBackAcross)
{
//Seek to the original position with slowing down algorithm based on the steering paper
Vector3 targetOffset = m_UFO.m_GOPos - m_UFO.m_body.Position;
float distance = targetOffset.Length();
float rampedSpeed = GameVariables.ufoMoveSpeed * (distance/50);
float clippedSpeed = MathHelper.Min(rampedSpeed, GameVariables.ufoMoveSpeed);
Vector3 desiredVelocity = (clippedSpeed/distance) * targetOffset;
Vector3 steering = desiredVelocity - m_UFO.m_body.Velocity;
m_UFOController.force0 = steering;
//If the UFO is within the distance from the starting point
if (distance <= 0.5f)
{
//Clear forces
m_UFO.m_body.ClearForces();
m_UFO.m_body.Velocity = new Vector3(0, 0, 0);
m_UFOController.force0 = Vector3.Zero;
//Change state to drop the prizes
m_ufoState = e_UFOStates.e_drop;
}
}
else if (m_ufoState == e_UFOStates.e_drop)
{
//Drop all prizes. The ones grabbed will fall while the ones not grabbed will stay still
foreach (Prize ob in m_prizesList)
{
ob.Drop();
}
m_mainCamera = m_ThirdPersonCamera;
//Allow the player to move again
m_ufoState = e_UFOStates.e_freeRoam;
}
}
public bool PrizeCollisionDetection(CollisionSkin owner, CollisionSkin collidee)
{
//If the UFO collides with the bottom of the box
if (collidee.Equals(m_UFO.m_skin) && m_ufoState == e_UFOStates.e_grabbing)
{
m_ufoState = e_UFOStates.e_moveBackUp;
return true;
}
// here is handled what happens if your Object collides with another special Object (= OtherObject)
foreach (Prize ob in m_prizesList)
{
if (collidee.Equals(ob.m_skin))
{
ob.m_body = null;
ob.m_skin = null;
m_GameObjects.Remove(ob);
m_prizesList.Remove(ob);
Components.Remove(ob);
m_prizesObtained++;
return true;
}
}
// all other collisions will be handled by physicengine
return true;
}
